/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.seatunnel.common.utils;

import org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PlaceholderUtils {

    public static String replacePlaceholders(String input, String placeholderName, String value) {
        return replacePlaceholders(input, placeholderName, value, null);
    }

    public static String replacePlaceholders(
            String input, String placeholderName, String value, String defaultValue) {
        String placeholderRegex = "\\$\\{" + Pattern.quote(placeholderName) + "(:[^}]*)?\\}";
        Pattern pattern = Pattern.compile(placeholderRegex);
        Matcher matcher = pattern.matcher(input);

        StringBuffer result = new StringBuffer();
        while (matcher.find()) {
            String replacement =
                    value != null && !value.isEmpty()
                            ? value
                            : (matcher.group(1) != null
                                    ? matcher.group(1).substring(1).trim()
                                    : defaultValue);
            if (replacement == null) {
                continue;
            }
            matcher.appendReplacement(result, Matcher.quoteReplacement(replacement));
        }
        matcher.appendTail(result);
        return result.toString();
    }

    public static String replacePlaceholders(String input, JsonNode supportedValues) {
        Pattern pattern = Pattern.compile("\\$\\{([^}]*)\\}");
        Matcher matcher = pattern.matcher(input);
        if (matcher.find()) {
            String placeholder = matcher.group(1);

            if (supportedValues.has(placeholder)) {
                String replaced = supportedValues.get(placeholder).asText();
                return replacePlaceholders(input, placeholder, replaced);
            }
        }
        return input;
    }
}
